Car Body Modification Technology Research

Auto adapted from sports car racing, and as a car culture has been extended, with the rapid development of automobile industry, the owner of the personalized demand makes the development of car modification also become regular consumers of auto life of the components, and gradually become a kind of fashion. Body modification as the most suitable for conversion methods are widely used, and the car body modification in Automotive Aerodynamic Characteristics of vehicle impact, so the error of parts or installation is possible to vehicle safety and influences the performance of the.Based on the modified car development at home and abroad on the basis of the status quo, analysis of car body modification in the content and methods of the quality; on the body of the fundamentals of Aerodynamics Research; a hatchback car3D models, and the design of the three kinds of different shape and position through the installation of tail fins; and different speed limited element analysis and contrast of CFD body surface pressure, airflow distribution and stress on the hatchback car modification, offerred directive opinion. The specific contents and conclusions are summarized as:1. on research status of related fields. Research on the domestic and foreign related references, the domestic automobile market is in its infancy and rapid development stage, is a rapid development of the industry, need the guidance of national policy, scientific research in guidance and healthy development.2. Modern automobile bodywork common modification content and method. Discusses the definition, classification, modified car modified common form, security issues, policies and regulations, the modified classification and the effect on performance.3. The rear spoiler (tail) on aerodynamics effect. Analysis of the resistance of air composition, stress analysis and reducing resistance measures. The main is to reduce air resistance and the two resistance, car tail lift. At present, reduce the lift are the main measures to increase the tail or spoiler.4. Body modeling and numerical simulation. Using Catia to build a hatchback hatchback body and tail of the3D model, and complete the assembly and numerical simulation. Analysis of three wing modification effect, from the appearance and the aerodynamic analysis of two aspects. By using the software Ansys grid and numerical simulation calculation, the next step for CFD analysis lay the foundation for.5. Body tail adapted for the analysis of aerodynamic characteristics. Based on the results of numerical calculation, analysis of different tail and different installation position on the aerodynamic characteristics of the impact, from numerical and CFD fluid analysis of two aspects of analysis of retrofitting tail after the dynamic characteristics, and gives the design and modification of the hatchback give guidance.